v2.8.0

Cthulhu v2.8.0

Diff since v2.7.9

Closed issues:

• at-descend errors about not being able to find source (#350)

Merged pull requests:

• Add TypedSyntax package (#353) (@timholy)
• Add RTCallInfo for runtime calls (#354) (@timholy)
• don't renumber effects/remarks after inference (#355) (@aviatesk)
• Implement annotated source-view & make default (#356) (@timholy)
• Add Julia 1.7 to test matrix (#357) (@timholy)
• save/read annotate_source config (#358) (@aviatesk)
• Better support for args with default values (#359) (@timholy)